Re: Problems with photometric optimisation and the final output when translation is nonzero

T. Modes <Thomas.Modes <at> gmx.de>
2010-08-01 09:15:58 GMT

Hi,
On 20 Jun., 18:34, Wirz <s... <at> lukas-wirz.de> wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> Hi,
>
> > The photometric optimiser claims there are no overlapping points.
>
> After a little bit more testing I can refine my initial description: If
> the translation parameters are large the optimizer claims there were no
> overlapping points -- in case of small Tx, Ty, Tz however, some
> optimization is done but the result is awfully wrong.
>
This should be fixed in repository now (changeset 4176/ebece9c9319d).
Thomas
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Re: FreePV Compile on Ubuntu

Bruno Postle <bruno <at> postle.net>
2010-08-01 23:48:15 GMT

y 2010 18:16, Dale Beams <drbeams <at> hotmail.com> wrote:
> Located the error. Not sure what to do with it. CMAKE needs
> modification or only need to add path to build line?
At some point the plugin-api changed and I can no longer build the
freepv plugin with a current version of xulrunner.
If you can't fix this then the next best thing to do is build the
library and executables, but not the plugin.
--
Bruno
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Re: Command Line Script for Auto-Generating Panoramic Images?

Bruno Postle <bruno <at> postle.net>
2010-08-01 23:48:32 GMT

y 2010 03:59, Casey <casey.mcginty <at> gmail.com> wrote:
>
> I am looking for a script that would build a panoramic image without
> user input. This is for an automated webcam system. I cobbled together
> something today, but maybe I am duplicating something that already
> exists. Here's what I came up with so far:
The nearest thing to current information for this sort of thing is here:
http://wiki.panotools.org/Panorama_scripting_in_a_nutshell
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Bruno
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Re: Panini patents?

Tom Sharpless <tksharpless <at> gmail.com>
2010-08-02 12:57:10 GMT

HI all
Eric: yes, the math is published in the paper Dan, Bruno and I wrote
for this summer's conference on Computational Aesthetics (). It is
also of course implicit in the code in libpano13, which I included in
the preliminary patent application.
Dale and Dave: True, a blanket free license for GPLv3 open source
software would not cover PTGui or PTAssembler. But I would give them
free or cheap licenses if they think they need them. In fact Max's
projections, though visually quite similar to the Panini, use
different formulas. The compressed rectilinear projection goes back
at least to Georges Lagarde's work in 2007. I don't know but suspect
that the vedutismo in PTGui is mathematically identical to Panini
(with variable compression, as in Panini, the program).
But the math isn't the point. I believe US patent law at any rate
focuses mainly on what it is good for, rather than how you do it. So
products that do sufficiently different useful things would be
separately patentable even if they all used the same basic math. What
I hope for is that all uses of compressed projections in panoramic
photo processing would be "public domain", while things like a Panini
rendering engine for wide angle movies would be patentable as a novel
application of the same principles. But we shall see.
Jan: I shall take your suggestion and ask FSF for advice.
Best, Tom
On Jul 30, 4:55 pm, Dale Beams <drbe... <at> hotmail.com> wrote:

Re: Looking for help fixing distortion in panoramic photos

Bart van Andel <bavanandel <at> gmail.com>
2010-08-02 13:34:29 GMT

On 29 jul, 22:29, "sani... <at> ymail.com" <sani... <at> ymail.com> wrote:
> Could you guys clarify for me what is causing the curving? What could
> I do differently without adding seams to my image?
As far as I can see from the tinypic image, the horizon isn't level.
You can tell because the far ends of the building do not point
straight up in the image, while would in the real world. Try adding
some vertical control points [0] and reoptimize the image. Don't get
confused by a curve in the image strip: probably your panoramic head
wasn't exactly level but slightly off-horizon.
[0] http://wiki.panotools.org/Vertical_control_points
--
Bart
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Strange boxes in HDR panorama output

flpm <flipmodeplaya <at> gmail.com>
2010-08-02 19:57:35 GMT

Hello,
I have experienced a problem with certain HDR panoramas stitched with
Hugin that I do not begin to understand. I have never experienced
this issue with single-frame HDR images produced with Hugin and do not
always experience it when I stitch HDR panoramas.
The issue is that the final EXR image appears totally black when I
open it in an HDR viewer (Luminance 2.0.0b), apparently because there
are certain pixels in the image that are (erroneously) way off the
appropriate display scale. If I play with the histogram until the
image is viewable, I find that there are large black boxes on the
panorama (see screenshot: http://imagebin.ca/view/ejQiZd.html). This
issue prevents me from tonemapping the image - all I can produce is a
big black jpeg.
Does anyone know why this might be happening or how I can fix it?
If I choose to produce a TIFF image instead of an EXR, I have the same
problem. I could supply a copy of the problematic image, but it is
nearly 100MB.
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Building, installing and running hugin on ubuntu

Scott K <holycow958 <at> gmail.com>
2010-08-03 03:29:52 GMT

I have used hugin before with great results, but since then, I have
begun using ubuntu as my main OS. I have tried to build hugin before
with no success, but not enough dedication to actually figure out what
went wrong. This time though, I managed to follow the steps on the
wiki nicely (thank you for the wiki, I have no idea how to do any of
that stuff by myself, so kudos to those who have made it so easy). I
followed the steps as literally as possible (copy and paste) and had
no errors and everything went fine, but I can't seem to figure out how
to open hugin. Mind you, I am sure this is a simple thing to do, but I
have no experience in installing and running anything that hasn't been
pre-made and only needing a few clicks to get running.
Thank you in advance for any help and for all the great work, have
made a few very nice (personally speaking) panoramas from hugin and
hope to make more.
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I have used hugin before with great results, but since then, I have
begun using ubuntu as my main OS. I have tried to build hugin before
with no success, but not enough dedication to actually figure out what
went wrong. This time though, I managed to follow the steps on the
wiki nicely (thank you for the wiki, I have no idea how to do any of
that stuff by myself, so kudos to those who have made it so easy). I
followed the steps as literally as possible (copy and paste) and had
no errors and everything went fine, but I can't seem to figure out how
to open hugin. Mind you, I am sure this is a simple thing to do, but I
have no experience in installing and running anything that hasn't been
pre-made and only needing a few clicks to get running.
Thank you in advance for any help and for all the great work, have
made a few very nice (personally speaking) panoramas from hugin and
hope to make more.

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I have experienced a problem with certain HDR panoramas stitched with
Hugin that I do not begin to understand. I have never experienced
this issue with single-frame HDR images produced with Hugin and do not
always experience it when I stitch HDR panoramas.

The issue is that the final EXR image appears totally black when I
open it in an HDR viewer (Luminance 2.0.0b), apparently because there
are certain pixels in the image that are (erroneously) way off the
appropriate display scale. If I play with the histogram until the
image is viewable, I find that there are large black boxes on the
panorama (see screenshot: http://imagebin.ca/view/ejQiZd.html). This
issue prevents me from tonemapping the image - all I can produce is a
big black jpeg.

Does anyone know why this might be happening or how I can fix it?

If I choose to produce a TIFF image instead of an EXR, I have the same
problem. I could supply a copy of the problematic image, but it is
nearly 100MB.

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